First: Don't aim body sprays towards door; it will leak. Second: you must have water pressure greater than 40 Psi to utilize Body spay jets.Preferaly 40~75+ psi If you are on well water get your plumber to VERIFY that you have the water capacity in your well and hot water heater/pressure tank for the number of sprays you have and also make sure he hooks the sprays up in a loop fashion to the sprays so you get even water pressure to all the sprays. Third: decide if you want the ability to use sprays on you when you are sitting on bench? Does your shower also have steam? Fourth: Are you planning on using Kerdi method for waterproofing this shower? If your not sure ask your contractor how they plan on waterproofing it & Bench area.

Delta Shower Systems are really great. We deal with them every day and they are really an industry leader. All Delta products have a lifetime warranty on both operation and finish so you really can't go wrong. They have a great parts replacement department to help if anything goes wrong. It's a little tricky to put together a shower system with everything needed for installation. Here's a guide we wrote we can help: https://faucetlist.com/blogs/buying-guides/shower-systems With regards to body sprays, Delta has a new style called HydraChoice Body Spray Jets. HydraChoice body sprays automatically pop-out of the wall when you turn on the water.. It is also possible to angle them as you choose once they are pop-out. Read more about these body sprays and watch a video of them in action...they are really cool! https://faucetlist.com/blogs/buying-guides/delta-shower-system-hydrachoice-body-sprays-with-video In regards to whether they are worth it, there are a few things to consider. If you are often cold when you take a shower or have a drafty bathroom then body sprays can help make sure you stay warm. They are designed to surround you with water which is very pleasant. I suppose worth it could also mean do they add value to your home. Well a shower system in the master bath have been shown to increase home value. So why not enjoy your shower while you live there and sell the house for more if you ever move! These images show a shower system with HydraChoice Body sprays, a handheld shower, and a showerhead

The above calculations hold true if the water heaters are connected in tandem however, if two 50gal water heaters are connected in series you begin with 100gal of water and as the dilution begins in the first water heater, the slightly cooler water enters the second tank where is is raised to the desired working temp, thus you can create a nearly continuous flow. In addition, when connected in series the first tanks temp control can be set about 10deg higher than the second tank thus under lighter loads the water will pass through the second tank without triggering the burner. In this manner under lighter loads the second tank functions solely as a storage vessel thus saving energy. On the other hand, there is a much bigger problem that generally goes unnoticed by homeowners. While most homeowners think of a shower in terms of the entire shower enclosure which is primarily intended to be a single occupant facility code must be capable of defining both the supply and drainage requirements of all showers, whether it is the single occupant residential facility or a large gang shower such as might be found in a school or factory locker room, thus for the purposes of estimating supply and drainage the code defines a shower as the shower head, thus when two or more shower heads can be operated simultaneously, we must allow the full code minimum water supply for each shower head. By example, under the IRC even though shower heads are restricted to a maximum flow rate of 2.5gpm, code requires that we size the piping for 3gpm. If we then design a shower facility with one shower head and 6 body sprays code would require the supply piping to be sufficient to supply 7 showers at 3gpm per shower for a combined total of 7x3gpm =21gpm. When using copper pipe code limitÂs the velocity of flow to a maximum of 8ft/sec thus to get the code minimum 21gpm supply, it would require an 1-¼" water line and 100gal water heaters. In turn, we must also compute the drain load at 2dfuÂs for each shower head, thus the combined drainage load for this shower would be 14dfuÂs, which would require a 3" drain line. I would strongly suggest you have a long talk with your local inspector before commencing this project.

The Home Depot site has a sizing chart section for water heaters. I copied the chart below and here's the link and then scroll down. It looks like a 5 person family would lean more towards the 65 gallon model where a 4 person family would lean more towards a 50 gallon model. The Rheem hybrid water heater has a "high demand" mode so you could switch it over to that mode when you have house guests to improve recovery time or weekends if you're doing a lot of laundry. (I don't see a "high demand" mode in the AO Smith owner manual.) Here's the info from the Rheem manual, page 18, "High Demand: This mode provides the highest recovery while still providing good energy savings. Water heater operates Heat Pump and electric heat simultaneously." The anode rod is the part that may need to be replaced so I would suggest to compare the info about the quality of the anode rod in the AO Smith compared to the quality of the anode rod in the Rheem. The Rheem information mentions a long lasting anode rod so that looks good. You might want to consider purchasing an extended warranty in case any repair is needed. As I recall, the 10 year warranty for these hybrid water heaters is for parts only and the labor costs are not covered, except in the 1st year. Household SizeGallon Capacity 1 – 2 23 – 36 2 – 4 36 – 46 3 – 5 46 – 56 5 or more 56 or higher